Re: [Libguestfs] guestfish Remote Images IPv6 Support
On Fri, Mar 29, 2019 at 06:17:17PM -0500, Jonathan Wright wrote:
I have scoured the web and can't find anything on the topic: Is
IPv6
supported for remote image targets?
It definitely should work, although I don't know if anyone has tried
using the address explicitly (rather than a hostname which resolves to
an AAAA record).
For example:
guestfish --format=raw --ro -a
rbd://[fd00::cefc:1]:6789/images/CentOS-7-x86_64-GenericCloud-1901
Does not work citing the following:
The important lines are these. Firstly guestfish parses the URL into
an actual libguestfs API call, which looks fine to me:
libguestfs: trace: add_drive
"images/CentOS-7-x86_64-GenericCloud-1901" "readonly:true"
"format:raw" "protocol:rbd"
"server:tcp:[fd00::cefc:1]:6789"
This is probably where it goes wrong:
"/tmp/libguestfs3pGMi6/overlay1.qcow2" "qcow2" -1
"backingfile:rbd:images/CentOS-7-x86_64-GenericCloud-1901:mon_host=[fd00::cefc:1]\:6789:auth_supported=none"
"backingformat:raw"
libguestfs: command: run: \ -o
backing_file=rbd:images/CentOS-7-x86_64-GenericCloud-1901:mon_host=[fd00::cefc:1]\:6789:auth_supported=none,backing_fmt=raw
libguestfs: command: run: \ /tmp/libguestfs3pGMi6/overlay1.qcow2
qemu-img: /tmp/libguestfs3pGMi6/overlay1.qcow2: invalid conf option
:cefc:1]:6789:auth_supported: No such file or directory
Could not open backing image to determine size.
The code in libguestfs is supposed to turn the guestfs_add_drive
‘servers’ parameter into a Ceph URL for qemu:
https://github.com/libguestfs/libguestfs/blob/f79129b8dc92470e3a5597daf53...
and I suppose this is being done wrong somehow (I don't have a Ceph
server to test).
At a guess I would say that it seems as if ':' characters must be
quoted somehow (backslash?) because they are also used to separate the
address and port number.
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
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